Kapor (who invented lotus 1-2-3) is, according to http://www.techcrunch.com/2007/06/25/mitch-kapors-foxmarks-to-lea , working on a new search engine. It uses foxmarks as the backbone, another Kapor creation which enables uses to store their firefox bookmarks in one place, but use them on many computers, so sort of a MeAggregator™ of bookmarks.

According to the article the searches that they tested on the prototype system was amazing. I definitely have to watch this development in my own quest to find an alternative search engine to google.